5 |
7 |
2 |
7 |
=0.233-0.133+
5 |
7 |
2 |
7 |
=(0.233-0.133)+(
5 |
7 |
2 |
7 |
=0.1+1,
=1.1;
(2)4.62+9.9+5.38+0.1,
=(4.62+5.38)+(0.1+9.9),
=10+10,
=20;
(3)4×0.6+0.6÷
1 |
4 |
=4×0.6+0.6×4,
=0.6×(4+4),
=0.6×8,
=4.8;
(4)0.38×7-
19 |
50 |
19 |
50 |
=
19 |
50 |
19 |
50 |
19 |
50 |
=
19 |
50 |
=
19 |
50 |
=
19 |
5 |
(5)36×(
4 |
9 |
5 |
12 |
=36×
4 |
9 |
5 |
12 |
=16-15+15,
=16;
(6)(
1 |
19 |
1 |
23 |
=
1 |
19 |
1 |
23 |
=23+19,
=42.